Norton Internet Security sometimes does the same thing, but it requires a full reboot before it will behave. Fortunately, they don't do this often.

The flaws affect the following packages: Norton Internet Security and Norton Internet Security Professional 2002, 2003 and 2004; Norton Personal Firewall 2002, 2003 and 2004; Symantec Client ...

If you are having problems installing Norton Anti-Virus under Mac OS X 10.3.x, you may need to uninstall the previously present copy (NAV 9.0.0) for the "LiveUpdate" component to properly perform ...

The flaw, which resides within Symantec's Norton AntiVirus 2004 application, could let attackers run code of their choice on a user's system, launch unauthorized pop-ups, or even create a denial ...

Norton AntiVirus 8.0 provides Auto Protect, SafeZone scanning and repair, LiveUpdate scheduling via Norton Scheduler, and command line scanning.

Symantec's LiveUpdate ensures that the latest patches, rules and signatures are integrated into the product. Norton AntiSpam includes a one-year subscription to the LiveUpdate feature.

Norton AntiVirus for Macintosh provides native virus protection on OS X 10.1 through manual scans and repairs. Users can also update virus definitions via LiveUpdate.

The buggy patch was released last Wednesday and was automatically installed on systems running Norton 2009 and Norton 360 using the company’s LiveUpdate system.